Improvement in ore-crushers



I. V. POMEROY.

Ore .Crusher. No. 48,999.

Patented July 25, 1865.v

N. PETERS. Phnmumngmpher. wnmngumA D, C.

UNITED STATES PATENT OEEICE.

J. V. POMEROY, OF UTIOA, NEW YORK.

Specification forming part of Letters Patent No. 48,999, dated July 25, 1865.

.To all whom it may concern:

Be itknownthat I, J. V. POMEROY. of Utica, county ot'Oneida, and State of New York, have invented a new and Improved Ore-Crusher; and I do hereby declare that the followingis a full, clear, and exact description thereof, referenee being had to the accompanying drawings, making a part ot' this specification, in which- Figure l is a vertical section through theimproved machine. Fig. 2 is an enlarged sectional view of t-he separating contrivances. Fig. 3 shows a modification ot' Figs. l and 2.

Similar letters of reference indicate corresponding parts in the three iigures.

My invention relates particularly to that class ofore-crushing machinery wherein stampers or hammers are employed for pulverizing the ore; and it consists in screening or separating the tine from the coarser portions of the ore as they leave the Crusher, and also as they leave the hopper within which the crusher or hammer works, as will be herein described.

To enable others skilled in the art to understand my invention, I will proceed to describe its application to one form of crushing-machine.

In the accompanying drawings, A represents the frame ot' the machine. which is erected upon a rm nnyielding foundation, B, and braced in a suitable manner to give it strength.

C is an anvil upon which the oreis crushed,

and D is a vertically-reciprocating hammer, which is on the lower end ot`a stem, E, that is guided by the horizontal beams of the frame A, as shown in Fig. l. This hammer receives its upward movement vfrom an S-shaped lifting-cam, F, which is keyed to the. rotating shaft F. Said cam acts upon a collar, a, on the hammer-stem and lifts the hammer, at the same time giving it a rotary motion about its axis. .When one of the curved arms of the lifter releases the hammer it falls by its own gravity and strikes the anvil or the ore which may be upon this anvil.

The upper end ofthe anvil (J is slightly reduced so as to form a neck, b, for receiving around it the lower end of a hopper, G, which is represented in the accompanying drawings of a conical form, with the base or Haring end ofthe cone uppermost. The top ot' this* hopper extends above the hammer and incloses it when it is upon the anvil. An opening is made through the top ofthe hopper G for the f passage ot` the hammer, and another opening made through this top for the purposeot' feeding the ore to be crushed through the small hopper, c, into the large one. Hopper G is perforated, as represented in the drawings, Figs. l and 2, for the purpose of admitting of the escape ot' the pulverized ore when it is sufticiently reduced under the hammer.

Surrounding the hopper G is a jacket, H, the lower end of which is open to admit of the free escape ofthe pulverized ore from the hopper Gr. This jacket serves as a fender for preventing the iinely pulverized ore escaping through the sides ot hopper G from flying away from the machine. It serves as a concentrator for delivering the crushed ore upon the apex of a conescreen,J, which is arranged around the anvil O, directly beneath the hopper G, as shownin thethreegures ofthe drawings.

The screen J is intended for separa-ting the line dust from the crushed ore as it falls from the Crushers or the hopper G, and for this purpose its perforations may be much tiner than those through the hopper.

ln Fig. 3 it will be seen that the perforated hopper Gris dispensed with and that the screen J performs all the work of separatin g the line from the coarser ore asit falls from the crusher.

Thejacket or fender H may be employed to advantage with the single screen J; or some other contrivance may be used instead of this jacket for preventing the ore from scattering during the crushing operation.

By my invention I confine the ore about the top ot the anvil O until it is sutcientlyne to allow it to escape, and by inclining the sides of the hopper G, as shown, the ore which is within this hopperwill be kept underthehammer until it is in acondition to escape through the sides of the hopper.

Where the perforated hopperis employed in conjunction with the secondary screen J, the perforations through the hopper may be much larger than would be desirable it' the secondary screen were not used, for in this case the coarse detritus which would not pass through the secondary screen can be passed a second time through the hopper G to be recrushed.

I do not desire to confine my invention to the particular form of crushing machinery herein described, as it is applicable to crushing machinery of various kinds and for various purposes Where the substance crushed requires to be screened.

What I claim as my invention, and desire to secure by Letters Patent, is

l. The hopper G, perforated circumferentially, or on its sides, and applied to an orccrusher for the purpose of separating thener quartz from the coa-rser during` the crushing process, substantially as herein described.

J. V. POMEROY.

Witnesses:

L. J. WORDEN, T. E. BRITTON. 

